19806365

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{2411}}^1$

素因数の和:2500

約数の個数: 16

約数和(自身を含む): 25007616

約数和(自身を除く): 5201251

約数列:

[1, 5, 31, 53, 155, 265, 1643, 2411, 8215, 12055, 74741, 127783, 373705, 638915, 3961273, 19806365]

約数ペア:

[(1, 19806365), (5, 3961273), (31, 638915), (53, 373705), (155, 127783), (265, 74741), (1643, 12055), (2411, 8215)]